a subject tonight is the aftermath to the deadly shooting in connecticut. we begin with mayor michael bloomberg of new york. >> shame on me if i am, as an american, with the wherewithal to do something, i have the bully pulpit, i have some money to spend to support candidates, shame on me if i don't go and do something. how can i explain to my kids that i didn't do something when, you know, i had this able to change the world. >> rose: we continue with john miller, dr. jeffrey lieberman and aborn. >> we have seen in our society a relaxation of cultural norms and constraints, and elevation of individuals of right to express themselves as individuals, freedom of speech, personal autonomy, self-determination. we've seen an elevation of the rights of the individual to the extent that it's maybe at the expense of the collective society whether it's gun control, right to bear arms or whether it's i can do and say anything and it's my right to do it no matter whom i offend. >> rose: we conclude this evening with mayor julian castro of san antonio and his twin brot